ISHS Acta Horticulturae 388: International Symposium on Viticulture and Enology
ECOPHYSIOLOGICAL RESPONSES OF CHARDONNAY AND SAUVIGNON IN DIFFERENT SOIL MANAGEMENTS |
| Authors: | S. Orlandini, B. Gozzini, L. Raspini, P. Storchi |
| Abstract:
Soil management can affect soil water availability and thus the yield of a vineyard. Different varieties show specific responses, that can be studied by analysing ecophysiological responses. Among these, leaf temperature has been used in several studies with good results, because its trend is related with soil water contents. A vineyard of Tuscany (central of Italy) was submitted to a test of four soil managements: weed chemical control, mechanical clean tillage, natural grass covering, artificial grass covering with Festuca arundinacea L. and Lolium perenne L. In this vineyard leaf temperature measurements were performed with a hand held infrared thermometer (8–14 μm) during several sunny days of three years (1991–1993). Studied cultivars were Chardonnay and Sauvignon graft on K5BB. After vintage, the must was analysed to evaluate the effect of water availability on the yield response of grapevine (Vitis vinifera L.). The results show that leaf temperature can be considered a valid instrument in the identification of the most correct soil management and in the definition of the characteristics of cultural zones. | |
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